Gas-lamp.



Patented June 10, I902.

. T. MAGUIRE.

GAS LAMP.

(Application filed July 17, 1900.)

2 Sheets-Sheet I.

(N0 Model.)

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v 'Patentedlun'e I0, 1902 T. MAGUIRE.

GAS LAMP.

(Application flled' July 17, 1900.)

2 sheets-sheet 2.,

(No Modl.)

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UNITED STATES PATENT ()EFICE.

THOMAS MAGUIRE, OF HONESDALE, PENNSYLVANIA.

GAS-LAM P.

SPECIFICATION forming part of Letters Patent No. 702,143, dated June 10,1 902.

Application filed J'uly 1'7, 1900.

To 6!, whom it may concern.-

Be it known that I,THOMAS MAGUIRE, a citizen of the United States,residing in the town of Honesdale, county of Wayne, and State ofPennsylvania, have invented a certain new and useful ImprovementRelating to Gas- Lamps; and I do hereby declare that the following is anexact description thereof.

My improvement applies to the globe-supports for stationary lamps,including street-' lamps supported on brackets projecting from abuilding or other object. It belongs to the class in which the globe canbe raised and swung laterally and can be locked to resist swinging. Iprovide improved means operating a dog to hold the globe elevated to anydesired extent and for dividing the globe into upper and lower parts. Iprovide for keying the parts together and liberating them as requiredand for raising and partially swinging around the parts to the .same orto different extents at will and for tilting the same after it has beenswungout of coincidence with the lamp. Special facilities are providedfor introducing alcohol to thaw ice in the pipes in cold climates.

The following is a description of what I consider the best means ofcarrying out the invention. v

The accompanying drawings form a part of this specification.

Figure 1 is'an elevation showing some of the principal features of theinvention. .The lamp is applied on a lamp-post. The dotted linesillustrate the conditions when the globe has been simply raised so as toturn clear of v the burner and again when it has been swung around andlowered. Fig. 2 is a vertical'section through certain parts on a largerscale. Fig. 2 is a corresponding section showing another portion. Fig. 3is a horizontal section on the line 3 3 in Fig. 2. Fig. 4 is ahorizontal section corresponding to Fig. 2, but taken on the line 4 4 inFig. 1. Fig. 5 is acorresponding section on the line 5 5 in Fig. 2. Fig.6 shows one of the details detached. Fig. 7 is a view correspondingtoFig. 1, showing a modification of the form. Fig.8 is a correspondingview showing the lamp mounted on a bracket. Fig. 8 is a plan view of aportion. Figs. 9 and 10 show on a small scale how the invention may bewell applied when the gas Serial No. 23,890. (No model-) p is receivedfrom above. Figs. 11, 12, and 13 are Views of portions which show theinvention more fully carried out, the top and the globe being bothcapable of swinging laterally, with the additional quality of' the topbeing capable of swinging independently of the body of the globe. Fig.11 is an elevation of a portion. Fig. 12 is a vertical section of aportion on a radial plane. Fig. 13 is a vertical section along adifferent radial plane. A portion of this figure is shown in elevation.

Similar letters of reference indicate corre sponding parts in all thefigures where they.

appear.

Referring to Figs. 1 to 6, inclusive, A is a certain portions beingdistinguished by supernumerals. D'isashortinclinedbranchopening upwardof sufficient length to afford convenient access and closed by atightly-fitting removable plug F, adapted to allow the introduction ofalcohol to, thaw open the passage when ice is formed in the interior.This is at a higher level than the part of the pipe B through which thegas is received, so that on introducing a very small quantity of alcoholit descends directly to the obstruction and thaws it. D 'is an extensionwhich carries theburner, extending upward in the open base of the globeG, performingits usual duty. D is a branch inclined in the oppositedirection relatively to the branch D and receiving an arm E, which maybe hollow for lightness, as shown; but it serves simply as a rigidsupport for the parts to be described. G is a hollow casting fitting onthe inclinedarm E and having a screw-threaded hole g, which receives thearm E. Certain portions are designated bysupernumerals. G is an uprightportion receiving in an enlargement g of the internal chamber a screwthreaded rigidly-held extension-tube G which incldses a loosely-fittingrodI, extending upward and downward through the whole and projectingbelow the casting G. The construction allows this red I and the partscarried thereon to be raised and swung partially around when required. Ihave shown this rod as hollow and prefer such construction; but itserves simply as a rod, and I will refer to it as such. The upper end ofthis rod is tapped into a casting J, which supports a straight arm K,extending horizontally therefrom, and which receives a cap K and a nut Kfor taking firm hold of the thin metal at the farther side of the headof the lamp.

The annular lower face of the casting J is formed with teeth J. Near theupper end of the tube G is a casting H, held firmly in place by a screwII. The annular upper end of this casting is formed with notches h h,(see Fig. 4,) adapted to receive the teeth J in different positions andto hold against the parts being turned by the wind or other slightcauses.

When it is required to clean the interior of the globe, it is lifted bythrusting upward the rod I, aided, perhaps, by gentle force applied tothe globe, until it has been raised to the extent required, and the rodI and its attachmen ts are partially revolved, carrying the arm K andthe attached globe. After it has been thus turned a half a circle it maybe lowered and the teeth .I will engage in the notches h in a positionthe reverse of that shown by the strong lines, and the lamp will be heldagainst any accidental turning force.

The globe may be turned on the horizontal axis formed by the arm K andheld in an inclined position to facilitateaccess for washing and wipingthe interior.

The notches h are at right angles to the notches 77., so that when therod 1 has been turned only a quarter of a revolution it may be loweredand held in position by the engagement of the teeth J with the notchesh.

It may be required sometimes to hold the globe automatically in anelevated position. This may be effected by the aid of a dog M, which isinclosed loosely within the casting G and is capable of rising andsinking by turning on an adjustable center, which I have shown as formedby the pointed end of a screw L, held firmly adjusted by a jam-nut L.

N is a shaft capable of being turned in bearings in the casting G. It isprovided with a notch 12, which is capable of receiving the dog M. Thisshaft may be turned by its head N, having an index-arm N so as to turnthe notch 91. down and present the rounded surface of the shaft Nupward. Thus adjusted the dog is of no effect, being held up, and therod, with the globe, may be raised and turned at will. When, on thecontrary, the shaft N is turned to present the notch 12 upward, itreceives the dog, as shown by strong lines in Fig. 2. The screw L shouldbe adjusted so as to cause this dog to take a firm hold to resist thedescent of the rod I when the shaft is so adjusted. A considerableopening 9 in the bottom of the casting G allows the insertion of the dogin assembling the parts. The upper end of the fixed tube G extends intoa corresponding recess in the casting J. A pinching-screw O is tappedinto this casting and adapted to press against this extension of thefixed tube G after the cleaning operation is completed and the globe isreturned to its place. This screw 0 gives additional security to preventthe globe being displaced by strong gales or other causes when in use.

Figs. 7, 8, and 8 show a form in which the upper portion of the globe ismade separate from the lower portion, and the capacity for turning theglobe into inclined positions is dispensed with. In this form of theinvention an arm K carries the globe C. The upper portion P may be takenoff, and such removal would allow convenient access from above to thelower portion of the globe; but such separation is not usuallynecessary. The interior may be easily cleaned from below when it isswung around, notwithstanding the absence of capacity for tilting.

Fig. 9 shows one of the many ways in which parts may be arranged whenthe gas is received from above. The pipe 13* brings the gas down fromthe ceiling or porch. This is bent so as to make a detour within theglobe, and thus allow room for the flame. The mechanism for raising theglobe is of the same general character as shown in Fig. 1. The presenceof the fixed pipe 3" prevents the arm and the globe from being swunghorizontally. lVith this form of the invention the lifting must besufiicient to allow proper access without swinging the globe.

Fig. 10 shows two forms. The strong lines show two pipes extendingdownward from the ceiling, joined by a horizontal member below theburner and globe. In these the gas, although received primarily fromabove through the pipe B***, enters the globe from below. The mechanismfor raising and turning the globe is the same as with Fig. 1. It will beunderstood that the gas need not descend through both pipes. The gasconnection is made to the left pipe B***, and the part B**""", which isa hollow arm or pipe of the same size and curvature so as to givesymmetrical appearance, serves simply as a mechanical support for theparts. The dotted lines in this Fig. 10.show a nearly similarconstruction, with the two pipes joined into one, which extends throughthe ceiling in the line directly above the lamp.

Figs. 11, 12, and 13 show means by which the upper portion P" of theglobe may be turned independently of the lower portion 0. K is a rigidarm fixed on the casting J by a boltR and carries the lower portion O ofthe globe. Above this is an arm T, similarly fixed to a casting U by abolt V. The casting J has teeth J which engage in notches h* in thecasting H below and control the horizontal swinging of the lower part0*" of the globe. The casting U has corresponding teeth U, which engagein notches If in the casting J. The rod J extends down from the castingU within the sleeve U which latter extends down from the casting J Bothturn within and are firmly supported by the casting H. The rim whichforms the base of the upper part P* of the globe has an aperture 10,which receives a peculiar locking-piece S, introduced radially and whichinsures that the upper portion 1 is firmly held down upon the lowerportion K**. Figs. 11 and 12 show this locking-piece S in use. It is inbrief a bolt with a T-head and a nut. When this locking-piece is turned,so that its headS lies radial to the lamp, it may be moved outward andtaken away. Now the parts P* and may be separated. 'Whenthislooking-piece is againinserted and is turned 7 thalene.

a quarter of a revolution, its T- head can hold on the rim P, and onturning the nut S the parts are firmly clamped together. The shaft N,having its notch n and provided with the head N, gives the advantagethat the dog M may be very conveniently put into and out of use at will,and by reason of the friction of the shaft will remain reliably in thecondition in which it is adjusted. The indicator-arm N shows to the eyewhat is the condition in this regard. The screw L, held firmly by thejam-nut L, makes an adjustable pivot for the dog, allowing it to be heldso as to grip the rod I with any desired degree of force While thebearing for the opposite face of the rod I may be fixed.

I use the term globe to mean either the entire part usually sodesignated or the upper portion thereof.

The inclined branch D serves as a passage for introducing alcohol notonly to thaw ice, but'to dissolve and remove paraffin or naph- It isimportant that it opens upward to receive the liquid by gravity and thatthere shall be a free passage'downward there-.

from to allow the solvent to flow by gravity to the ice or the hardhydrocarbon to be dissolved. The plug is easily accessible.

In all the forms the V shape of the notches h, &c., and of the teeth J,&c.,which engage therein is of advantage in aiding to attain.

the correct position in rapidly restoringa lamp to place after it'hasbeen cleaned. It.

is also of advantage in allowing the lamp to be turned by any greatforce,as being struck by a carriage or other passing object, theyielding by the automatic rise due to the V shape saving theconstruction from fracture. Having now described my invention, what Iclaim as new, and'desire to secure by Letters Patent, is

'1. In a gas-lamp, a primary support, a vertical rod carried thereon andfree to move up lar bearing and arocking dog M, a rod I verticallymovable in said bearing and arranged to be held in an elevated positionby frictional pressure from the dog, and a turning. device N Narrangedtransversely under such dog for lifting and holding the latterout of operative position at will, herein specified.

3. In a gas-lamp, the combination with'a primary support, of a casting Ghaving tubular bearing and a rocking dog M, a rod Ivertically movable insaid bearing and arranged to be held in an elevated position byfricsubstantially as tional pressure from the dog, and a screw 80forming an adjustable pivot for suchdog, all substantially as hereinspecified.

In testimony that I claim the invention above set forth I affix mysignature inpresence of two witnesses.

THOMAS MAGUIRE.

Witnesses:

WARREN P. SoHENoK, BUEL DODGE.

